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Identifying differentially coexpressed module during HIV disease progression: A multiobjective approach.

Sumanta Ray1, Ujjwal Maulik2

  • 1Department of Computer Science and Engineering, Aliah University, Kolkata, 700156, India. sumantababai86@gmail.com.

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Summary

This study introduces DiffCoMO, a novel framework to identify altered gene coexpression modules in HIV-1 progression. DiffCoMO effectively detects differential coexpression patterns, outperforming existing methods and revealing miRNA regulation.

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Area of Science:

  • Bioinformatics
  • Systems Biology
  • Genomics

Background:

  • Gene coexpression analysis reveals coregulation patterns in specific phenotypes.
  • Differential coexpression analysis identifies changes in gene coexpression between conditions.
  • Altered gene coexpression is linked to regulatory mechanism changes during disease progression, such as HIV-1.

Purpose of the Study:

  • To develop a novel multiobjective framework, DiffCoMO, for identifying differentially coexpressed gene modules.
  • To capture altered coexpression patterns across different stages of Human Immunodeficiency Virus type 1 (HIV-1) progression.
  • To compare DiffCoMO's performance against state-of-the-art techniques and validate findings with simulated data.

Main Methods:

  • Development of a multiobjective framework (DiffCoMO) emphasizing differences in coexpression patterns between two phenotype stages.
  • Comparative analysis of DiffCoMO with existing state-of-the-art methods for differential coexpressed module detection.
  • Validation using simulated data and biological significance assessment via Gene Ontology (GO) and pathway enrichment analysis.

Main Results:

  • DiffCoMO demonstrates superior performance in detecting differential coexpressed modules compared to state-of-the-art methods.
  • Biological significance of discovered modules was investigated using GO and pathway enrichment.
  • miRNA enrichment analysis identified potential TF-miRNA and miRNA-TF regulatory connections.

Conclusions:

  • The DiffCoMO framework effectively identifies differentially coexpressed modules in HIV-1 progression.
  • Discovered gene modules suggest regulation by specific microRNA (miRNA) families, including miRNA-28, miRNA-29, and miRNA-125.
  • The findings provide insights into the regulatory mechanisms underlying HIV-1 progression.